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<html lang="zh">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>404 - 神秘案件</title>
    <style>
        body {
            margin: 0;
            padding: 0;
            background-color: #1a1a1a;
            color: #e0e0e0;
            font-family: 'Courier New', monospace;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            height: 100vh;
            text-align: center;
        }
        .notebook {
            background-color: #2c2c2c;
            border: 1px solid #444;
            border-radius: 5px;
            padding: 30px;
            max-width: 600px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.3);
            position: relative;
        }
        .notebook:before {
            content: "";
            position: absolute;
            top: 0;
            left: 30px;
            right: 30px;
            height: 3px;
            background: linear-gradient(to right, #ff5252, #ffeb3b, #4caf50);
        }
        h1 {
            color: #ff5252;
            font-size: 2.5rem;
            margin-bottom: 20px;
            text-transform: uppercase;
            letter-spacing: 2px;
        }
        p {
            font-size: 1.1rem;
            line-height: 1.6;
            margin-bottom: 25px;
        }
        .clue {
            background-color: #333;
            padding: 15px;
            border-left: 4px solid #ff5252;
            margin: 20px 0;
            text-align: left;
        }
        .btn {
            display: inline-block;
            padding: 10px 20px;
            background-color: #ff5252;
            color: white;
            text-decoration: none;
            border-radius: 3px;
            font-weight: bold;
            transition: all 0.3s;
            margin-top: 10px;
        }
        .btn:hover {
            background-color: #ff1744;
            transform: translateY(-2px);
        }
        .magnifier {
            width: 80px;
            height: 80px;
            margin-bottom: 20px;
            animation: shake 0.5s infinite alternate;
        }
        @keyframes shake {
            from { transform: rotate(-5deg); }
            to { transform: rotate(5deg); }
        }
    </style>
</head>
<body>
    <img src="https://cdn-icons-png.flaticon.com/512/2913/2913103.png" alt="Magnifying glass" class="magnifier">
    <div class="notebook">
        <h1>案件 #404</h1>
        <p><strong>案发时间：</strong>刚刚</p>
        <p><strong>案件描述：</strong>目标页面神秘失踪</p>
        
        <div class="clue">
            <h3>线索分析：</h3>
            <p>1. 你输入的URL可能有误</p>
            <p>2. 页面可能已被移动或删除</p>
            <p>3. 或者...这可能是更大的阴谋的一部分</p>
        </div>
        
        <p>作为侦探，你有几个选择：</p>
        <a href="/" class="btn">返回总部（主页）</a>
        <a href="javascript:history.back()" class="btn">重新调查上一个现场</a>
    </div>
</body>
</html>